Re: [PATCH 2/2] test: use emacsclient(1) for Emacs tests

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+Date: Tue, 28 Jun 2011 12:22:57 -0400\r
+From: Austin Clements <amdragon@MIT.EDU>\r
+To: Dmitry Kurochkin <dmitry.kurochkin@gmail.com>\r
+Subject: Re: [PATCH 2/2] test: use emacsclient(1) for Emacs tests\r
+Message-ID: <20110628162257.GD4120@mit.edu>\r
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+\r
+Quoth myself on Jun 27 at 11:49 pm:\r
+> Quoth Dmitry Kurochkin on Jun 28 at  5:03 am:\r
+> EMACSDONE=$TEST_DIRECTORY/emacsdone\r
+> mkfifo $EMACSDONE\r
+> coproc emacs --batch --eval '(while t (eval (read)) (write-region "\n" nil "'$EMACSDONE'" t 0))'\r
+> EMACSFD=${COPROC[1]}\r
+> \r
+> test_emacs() {\r
+>     echo "$1" >&$EMACSFD\r
+>     read <$EMACSDONE\r
+> }\r
+> \r
+> test_emacs '(sleep-for 2)'\r
+> test_emacs '(message "Hi")'\r
+> \r
+> echo '(kill-emacs)' >&$EMACSFD\r
+\r
+Oops, got a little overzealous with TEST_DIRECTORY.  For reference,\r
+the pipe should, of course, have gone in the current directory (or\r
+TMP_DIRECTORY).\r
+\r
+mkfifo emacsdone\r
+coproc emacs --batch --eval '(while t (eval (read)) (write-region "\n" nil "emacsdone" t 0))'\r
+EMACSFD=${COPROC[1]}\r
+\r
+test_emacs() {\r
+    echo "$1" >&$EMACSFD\r
+    read < emacsdone\r
+}\r
+\r
+\r
+(I don't really see how that could be either more shell code or more\r
+elisp code than using emacsclient plus cleanup code [nor why it\r
+matters for five lines of code], but I'm probably missing something.)\r